A long straight wire is carrying a current of 12 A. The magnetic field at a distance

A long straight wire is carrying a current of 12 A. The magnetic field at a distance of 8 cm is (μ₀=4πx10⁻⁷ N A²)

Options

(a) 2×10⁻⁴ Wb/m²
(b) 3×10⁻⁵ Wb/m²
(c) 4×10⁻⁴Wb/m²
(d) 4×10⁻⁵ Wb/m²

Correct Answer:

3×10⁻⁵ Wb/m²

Explanation:

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